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<head><meta charset="utf-8"><title>weekly meeting 2019-11-14 #54818 · t-compiler · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/index.html">t-compiler</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html">weekly meeting 2019-11-14 #54818</a></h3>

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<a name="180715827"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180715827" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180715827">(Nov 14 2019 at 10:04)</a>:</h4>
<p>Hi <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span> ; the triage meeting will be starting in 4 hours 56 minutes</p>



<a name="180715865"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180715865" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180715865">(Nov 14 2019 at 10:04)</a>:</h4>
<p>I will be doing <a href="#narrow/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-11-14.20.2354818/near/180715846" title="#narrow/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-11-14.20.2354818/near/180715846">pre-triage in a parallel topic</a></p>



<a name="180715928"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180715928" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180715928">(Nov 14 2019 at 10:05)</a>:</h4>
<p>I forgot to do the Polonius WG check-in last week, so I'll be posting that shortly. (If @lqd is around then maybe they can answer any Q's you all have.)</p>



<a name="180715984"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180715984" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180715984">(Nov 14 2019 at 10:06)</a>:</h4>
<p>the <em>scheduled</em> WG checkin is for RLS 2.0 and self-profile</p>



<a name="180716002"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180716002" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180716002">(Nov 14 2019 at 10:06)</a>:</h4>
<p>regarding RLS 2.0: <span class="user-mention" data-user-id="133169">@matklad</span> , you around?</p>



<a name="180716015"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180716015" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180716015">(Nov 14 2019 at 10:06)</a>:</h4>
<p>(or rather: Will you be available at the time of the meeting)</p>



<a name="180716047"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180716047" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180716047">(Nov 14 2019 at 10:07)</a>:</h4>
<p>and likewise for self-profile: is <span class="user-mention" data-user-id="124287">@mw</span> or <span class="user-mention" data-user-id="125250">@Wesley Wiser</span> available to give an update at the meeting?</p>



<a name="180716216"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180716216" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180716216">(Nov 14 2019 at 10:09)</a>:</h4>
<p>regarding the Polonius checkin, here is <span class="user-mention" data-user-id="116113">@lqd</span> 's update (<a href="https://hackmd.io/YolG8Ya3Tb6egATPOcqVkw?view" target="_blank" title="https://hackmd.io/YolG8Ya3Tb6egATPOcqVkw?view">hackmd</a>):  </p>
<blockquote>
<p>Since the last compiler meeting WG check-in, we:</p>
<p>- made a lot of progress on our completeness goals with the work on move/initialization errors, and subset errors, both getting close to completion.<br>
- fixed the last failure in the rustc test suite (but there are still the same 2 OOMs as last time, we haven't had much time to look at those yet).<br>
- made diagnostics output match NLL in a lot more cases (there are less <code>.polonius.stderr</code>s in-tree).<br>
- did some cleanup in our terminology by picking better names for our atoms (for example, <code>origin</code> instead of <code>region</code>, <code>path</code> instead of <code>MovePath</code>) hopefully making it clearer in the process, and more work is planned here.<br>
- last time we mentioned we'd like to work on a polonius book, so we've done that. It's sparse at the moment but online, at <a href="https://rust-lang.github.io/polonius/" target="_blank" title="https://rust-lang.github.io/polonius/">https://rust-lang.github.io/polonius/</a>, and more documentation work is in-flight and planned.<br>
- the exploration and prototype on the rules offering more flow-sensitive precision for the analysis has also progressed a lot.<br>
- also did some refactoring, and work quite a bit on performance. And since the latter can step on the other work and vice-versa, we decided to focus on completeness first, and then after that has been achieved, re-adapt and land the optimization work.</p>
<p>Some more news:<br>
. - Niko has done a presentation on Polonius at RustBelt Rust. Slides are available at <a href="https://nikomatsakis.github.io/rust-belt-rust-2019/" target="_blank" title="https://nikomatsakis.github.io/rust-belt-rust-2019/">https://nikomatsakis.github.io/rust-belt-rust-2019/</a><br>
- Albin has finished their master's thesis, and is currently rewriting most of the draft (which was available at <a href="user_uploads/4715/ufu5BGNrkzVbV8FtkK3Tco6M/Albins-Thesis-draft-version.pdf" target="_blank" title="user_uploads/4715/ufu5BGNrkzVbV8FtkK3Tco6M/Albins-Thesis-draft-version.pdf">https://rust-lang.zulipchat.com/user_uploads/4715/ufu5BGNrkzVbV8FtkK3Tco6M/Albins-Thesis-draft-version.pdf</a>).<br>
- we hope to have a "polonius work week" at the end of November to push the in-progress work over the finish line together.</p>
</blockquote>



<a name="180716315"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180716315" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> matklad <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180716315">(Nov 14 2019 at 10:10)</a>:</h4>
<p>Yep, will be there, will do status report!</p>



<a name="180717537"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180717537" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180717537">(Nov 14 2019 at 10:27)</a>:</h4>
<p>I may also be around to answer questions -- depending on $dayjob work I might have to answer async. Niko will surely attend and can also answer any such questions of course</p>



<a name="180721963"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180721963" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180721963">(Nov 14 2019 at 11:29)</a>:</h4>
<p>I should be around for the checkin</p>



<a name="180724954"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180724954" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180724954">(Nov 14 2019 at 12:19)</a>:</h4>
<p><span aria-label="construction worker" class="emoji emoji-1f477" role="img" title="construction worker">:construction_worker:</span> request for assistance: Anyone want to try to look into "<br>
Rustc panics (NoSolution): could not prove Binder(projection soup)" <a href="https://github.com/rust-lang/rust/issues/65581" target="_blank" title="https://github.com/rust-lang/rust/issues/65581">#65581</a>  ?</p>



<a name="180725022"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180725022" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180725022">(Nov 14 2019 at 12:20)</a>:</h4>
<p>(might be missing normalize call. might be yet another "needs lazy-normalization" ...)</p>



<a name="180726652"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180726652" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180726652">(Nov 14 2019 at 12:43)</a>:</h4>
<p><span aria-label="construction worker" class="emoji emoji-1f477" role="img" title="construction worker">:construction_worker:</span> request for assistance: "Rust 1.38 regressions weren't fully triaged" <a href="https://github.com/rust-lang/rust/issues/65577" target="_blank" title="https://github.com/rust-lang/rust/issues/65577">#65577</a>. There are five cases left to look at, see <span class="user-mention" data-user-id="116118">@Matthew Jasper</span> 's comment <a href="https://github.com/rust-lang/rust/issues/65577#issuecomment-544284147" target="_blank" title="https://github.com/rust-lang/rust/issues/65577#issuecomment-544284147">here</a></p>



<a name="180729150"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180729150" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180729150">(Nov 14 2019 at 13:16)</a>:</h4>
<p><span aria-label="construction worker" class="emoji emoji-1f477" role="img" title="construction worker">:construction_worker:</span> request for assistance: "Miscompilation with target-cpu=znver1 (AMD Ryzen 1000/2000 series) on Windows + LLVM 9." <a href="https://github.com/rust-lang/rust/issues/63959" target="_blank" title="https://github.com/rust-lang/rust/issues/63959">#63959</a>: <span class="user-mention" data-user-id="119009">@eddyb</span> has done epic reduction. But we need someone else, with ready access to windows-development  as a target (even via Wine on Linux, apparently) to pick up the torch</p>



<a name="180729934"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180729934" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180729934">(Nov 14 2019 at 13:26)</a>:</h4>
<p><span aria-label="exclamation" class="emoji emoji-2757" role="img" title="exclamation">:exclamation:</span> one item on the nominations list is "Some features can no longer be controlled by conditional compilation" <a href="https://github.com/rust-lang/rust/issues/65860" target="_blank" title="https://github.com/rust-lang/rust/issues/65860">#65860</a> . I want to make sure we resolve today <strong>who</strong> and <strong>where</strong> we are going to resolve the questions here: Q1: Is it T-lang or T-compiler or both? Q2: Is asynchronous discussion sufficient (with or without an rfcbot poll), or do we need a synchronized meeting (maybe one of the Friday steering meetings)?</p>



<a name="180731996"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180731996" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180731996">(Nov 14 2019 at 13:51)</a>:</h4>
<blockquote>
<p><span aria-label="construction worker" class="emoji emoji-1f477" role="img" title="construction worker">:construction_worker:</span> request for assistance: "Miscompilation with target-cpu=znver1 (AMD Ryzen 1000/2000 series) on Windows + LLVM 9." <a href="https://github.com/rust-lang/rust/issues/63959" target="_blank" title="https://github.com/rust-lang/rust/issues/63959">#63959</a>: <span class="user-mention silent" data-user-id="119009">eddyb</span> has done epic reduction. But we need someone else, with ready access to windows-development  as a target (even via Wine on Linux, apparently) to pick up the torch</p>
</blockquote>
<p>I'm not really sure about that call for action, tbh</p>
<p>At this point you can look at the IR/assembly on godbolt (e.g. I got this from <span class="user-mention" data-user-id="119581">@mati865</span>: <a href="https://godbolt.org/z/esAhng" target="_blank" title="https://godbolt.org/z/esAhng">https://godbolt.org/z/esAhng</a>) and try to deduce what's happening from there</p>
<p>I found it hard to reduce further, so unless someone has ideas they want me to try, it's probably better to dig into where in LLVM it goes wrong</p>
<p>Also, I haven't tested the final reproduction on wine again, it might not work now (or trigger SIGILL on my older CPU), but I think <span class="user-mention" data-user-id="119581">@mati865</span> was able to repro with cross-compilation + wine (on the right hardware), so that's likely more useful if we can streamline it</p>
<p>And you need a 1st generation Ryzen CPU, that's the hard part in all of this. I have access to one and I (or one of my colleagues) can help test things out on it, I just don't have the time to think about it or stare at LLVM IR</p>



<a name="180732008"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180732008" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180732008">(Nov 14 2019 at 13:51)</a>:</h4>
<p>(sorry for the wall of text)</p>



<a name="180732205"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180732205" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180732205">(Nov 14 2019 at 13:53)</a>:</h4>
<p>(arguably one thing that could be done semi-automatedly is bisect LLVM to find the point between 8.0 and 9.0 where the resulting assembly changed - I don't even think this is a high-level LLVM optimization btw. then again, maybe it was just the znver1 target CPU, or its cost tables, being added at all, so no useful information would be gained)</p>



<a name="180732288"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180732288" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Hanna Kruppe <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180732288">(Nov 14 2019 at 13:54)</a>:</h4>
<p>might be a good ICE-breakers-llvm issue, since at this point it's pretty likely to be an LLVM bug and as eddyb said further insight will most likely come from digging into LLVM</p>



<a name="180732446"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180732446" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180732446">(Nov 14 2019 at 13:56)</a>:</h4>
<p>something we could've done in retrospect is replace the cost tables with those from another μarch and see if that fixes it, we could've probably easily avoided getting this bug into stable without reverting the 9.0 upgrade, but I guess none of us expected it to be that far down the stack</p>



<a name="180733983"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180733983" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mati865 <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180733983">(Nov 14 2019 at 14:12)</a>:</h4>
<blockquote>
<p>something we could've done in retrospect is replace the cost tables with those from another μarch and see if that fixes it, we could've probably easily avoided getting this bug into stable without reverting the 9.0 upgrade, but I guess none of us expected it to be that far down the stack</p>
</blockquote>
<p>I think replacing cost tables would be fairly easy but that would kill the point of targetting znver1 because the binary won't be optimal.</p>



<a name="180735683"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180735683" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180735683">(Nov 14 2019 at 14:33)</a>:</h4>
<p>lets tag it as ICE-breakers-llvm, in any case</p>



<a name="180736820"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180736820" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180736820">(Nov 14 2019 at 14:46)</a>:</h4>
<p><span class="user-mention" data-user-id="119581">@mati865</span> yeah but it would make <code>-Ctarget-cpu=native</code> work, even if people can avoid targetting <code>znver1</code> themselves</p>



<a name="180738464"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180738464" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180738464">(Nov 14 2019 at 15:03)</a>:</h4>
<p>Hi <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span>! Add a <span aria-label="wave" class="emoji emoji-1f44b" role="img" title="wave">:wave:</span> emoji to show you're here :)</p>



<a name="180738474"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180738474" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180738474">(Nov 14 2019 at 15:03)</a>:</h4>
<p>First five minutes are for...</p>



<a name="180738483"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180738483" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180738483">(Nov 14 2019 at 15:03)</a>:</h4>
<p><strong>Announcements</strong></p>



<a name="180738600"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180738600" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180738600">(Nov 14 2019 at 15:04)</a>:</h4>
<p>my announcement: please do skim up above for the <span aria-label="construction worker" class="emoji emoji-1f477" role="img" title="construction worker">:construction_worker:</span> <span aria-label="construction worker" class="emoji emoji-1f477" role="img" title="construction worker">:construction_worker:</span> <span aria-label="construction worker" class="emoji emoji-1f477" role="img" title="construction worker">:construction_worker:</span>  who are asking for your help</p>



<a name="180738662"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180738662" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180738662">(Nov 14 2019 at 15:04)</a>:</h4>
<p>someone replaced a lot of <code>TypeFoldable</code> impls with a derive and it looks really easy <a href="https://github.com/rust-lang/rust/pull/66384" target="_blank" title="https://github.com/rust-lang/rust/pull/66384">https://github.com/rust-lang/rust/pull/66384</a></p>



<a name="180738712"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180738712" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180738712">(Nov 14 2019 at 15:05)</a>:</h4>
<p>Polytyptic programming for the win <span aria-label="banana" class="emoji emoji-1f34c" role="img" title="banana">:banana:</span> <span aria-label="glasses" class="emoji emoji-1f453" role="img" title="glasses">:glasses:</span> <span aria-label="envelope" class="emoji emoji-2709" role="img" title="envelope">:envelope:</span></p>



<a name="180738725"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180738725" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180738725">(Nov 14 2019 at 15:05)</a>:</h4>
<p>I wish I realized how straight-forward it is, maybe we should have <code>E-easy</code> issues for some of these?</p>



<a name="180738782"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180738782" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180738782">(Nov 14 2019 at 15:06)</a>:</h4>
<p>that's very cool</p>



<a name="180738798"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180738798" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180738798">(Nov 14 2019 at 15:06)</a>:</h4>
<p>it's finally public <span aria-label="tada" class="emoji emoji-1f389" role="img" title="tada">:tada:</span> <a href="https://blog.rust-lang.org/inside-rust/2019/11/14/evaluating-github-actions.html" target="_blank" title="https://blog.rust-lang.org/inside-rust/2019/11/14/evaluating-github-actions.html">https://blog.rust-lang.org/inside-rust/2019/11/14/evaluating-github-actions.html</a></p>



<a name="180738799"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180738799" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180738799">(Nov 14 2019 at 15:06)</a>:</h4>
<p>we've talked with <span class="user-mention" data-user-id="124288">@oli</span> about some code around interning</p>



<a name="180738834"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180738834" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180738834">(Nov 14 2019 at 15:07)</a>:</h4>
<p>we still need to do a lot more testing, but I hope we can get sub-2hr builds on bors with actions</p>



<a name="180738857"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180738857" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180738857">(Nov 14 2019 at 15:07)</a>:</h4>
<p><span class="user-mention" data-user-id="121055">@Pietro Albini</span> it feels like the move to Azure was a couple weeks ago :P</p>



<a name="180738888"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180738888" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180738888">(Nov 14 2019 at 15:07)</a>:</h4>
<p>wait, whoa</p>



<a name="180738892"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180738892" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180738892">(Nov 14 2019 at 15:07)</a>:</h4>
<p>heh</p>



<a name="180738949"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180738949" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180738949">(Nov 14 2019 at 15:08)</a>:</h4>
<p>that's really wild</p>



<a name="180738978"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180738978" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180738978">(Nov 14 2019 at 15:08)</a>:</h4>
<p>get the exploding brain memes ready</p>



<a name="180738981"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180738981" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180738981">(Nov 14 2019 at 15:08)</a>:</h4>
<p>the data point we have at the moment is for PR builds</p>



<a name="180739000"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739000" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739000">(Nov 14 2019 at 15:08)</a>:</h4>
<p>we went from 1hr 56min to 42min</p>



<a name="180739043"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739043" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739043">(Nov 14 2019 at 15:09)</a>:</h4>
<p>wat</p>



<a name="180739056"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739056" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739056">(Nov 14 2019 at 15:09)</a>:</h4>
<p><del>you can't just say that without at least giving some semblance of an explanation</del></p>



<a name="180739067"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739067" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739067">(Nov 14 2019 at 15:09)</a>:</h4>
<p>explanation: 8 cores</p>



<a name="180739077"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739077" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739077">(Nov 14 2019 at 15:09)</a>:</h4>
<p>I thought there were fundamental limits to how fast we- oh</p>



<a name="180739089"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739089" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739089">(Nov 14 2019 at 15:09)</a>:</h4>
<p>yeah the blog post does say "increased core count"</p>



<a name="180739165"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739165" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739165">(Nov 14 2019 at 15:10)</a>:</h4>
<p>clearly this is a way for all of us to justify buying 8-core laptops</p>



<a name="180739194"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739194" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739194">(Nov 14 2019 at 15:10)</a>:</h4>
<p>/me slaps the roof of 24-core 48-thread AMD EPYC server</p>



<a name="180739236"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739236" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739236">(Nov 14 2019 at 15:11)</a>:</h4>
<p>/me looks at that 128 core epyc server and transmutes into a jelly</p>



<a name="180739242"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739242" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739242">(Nov 14 2019 at 15:11)</a>:</h4>
<p><span class="user-mention" data-user-id="119009">@eddyb</span> I have a measly i7-7700K in my build-bot NAS</p>



<a name="180739262"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739262" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739262">(Nov 14 2019 at 15:11)</a>:</h4>
<p>okay. If there are any announcements we/you forgot, please PM me during the meeting and I'll allocate time at the end for them</p>



<a name="180739270"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739270" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739270">(Nov 14 2019 at 15:11)</a>:</h4>
<p>but lets get started</p>



<a name="180739276"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739276" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739276">(Nov 14 2019 at 15:11)</a>:</h4>
<p>oh and I tricked <span class="user-mention" data-user-id="126931">@centril</span> into trying this out (we've been meaning to fix it for many years now): goodbye useless <code>&lt;std macros&gt;</code> spans <a href="https://github.com/rust-lang/rust/pull/66364" target="_blank" title="https://github.com/rust-lang/rust/pull/66364">https://github.com/rust-lang/rust/pull/66364</a></p>



<a name="180739293"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739293" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739293">(Nov 14 2019 at 15:11)</a>:</h4>
<p>(sorry, got distracted by the shiny numbers above)</p>



<a name="180739353"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739353" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739353">(Nov 14 2019 at 15:12)</a>:</h4>
<p><span class="user-mention" data-user-id="119009">@eddyb</span>  speaking of... I hope not to rebase that PR too many times ^^</p>



<a name="180739369"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739369" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739369">(Nov 14 2019 at 15:12)</a>:</h4>
<p>so I went through all the P-high issues this week (finally, after two weeks of failing to do so)</p>



<a name="180739399"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739399" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739399">(Nov 14 2019 at 15:12)</a>:</h4>
<p>we have 30 open P-high issues, 15 of which are <a href="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen+is%3Aissue+label%3AT-compiler+label%3AP-high+no%3Aassignee" target="_blank" title="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen+is%3Aissue+label%3AT-compiler+label%3AP-high+no%3Aassignee">unassigned</a></p>



<a name="180739415"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739415" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739415">(Nov 14 2019 at 15:13)</a>:</h4>
<p>yikes</p>



<a name="180739419"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739419" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739419">(Nov 14 2019 at 15:13)</a>:</h4>
<p>I'd assign myself to those 15, but <span class="user-mention" data-user-id="126931">@centril</span> advised against that <span aria-label="wink" class="emoji emoji-1f609" role="img" title="wink">:wink:</span></p>



<a name="180739477"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739477" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739477">(Nov 14 2019 at 15:13)</a>:</h4>
<p>but in any case, if you are looking for a bug, check out the <span aria-label="construction worker" class="emoji emoji-1f477" role="img" title="construction worker">:construction_worker:</span> <span aria-label="construction worker" class="emoji emoji-1f477" role="img" title="construction worker">:construction_worker:</span> <span aria-label="construction worker" class="emoji emoji-1f477" role="img" title="construction worker">:construction_worker:</span> above</p>



<a name="180739560"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739560" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739560">(Nov 14 2019 at 15:14)</a>:</h4>
<p>next up, <a href="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=label%3Abeta-nominated+label%3AT-compiler" target="_blank" title="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=label%3Abeta-nominated+label%3AT-compiler">beta nominations</a></p>



<a name="180739572"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739572" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739572">(Nov 14 2019 at 15:14)</a>:</h4>
<p>there are <del>7</del> 9</p>



<a name="180739605"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739605" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739605">(Nov 14 2019 at 15:14)</a>:</h4>
<p>beta-nom 1/9: "Fix two OOM issues related to <code>ConstProp</code>" <a href="https://github.com/rust-lang/rust/issues/66394" target="_blank" title="https://github.com/rust-lang/rust/issues/66394">#66394</a></p>



<a name="180739646"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739646" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739646">(Nov 14 2019 at 15:15)</a>:</h4>
<p>(this is a pretty recent PR; we can wait to evaluate it next week if people like)</p>



<a name="180739650"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739650" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739650">(Nov 14 2019 at 15:15)</a>:</h4>
<p>you said something about waiting a week? ^--</p>



<a name="180739665"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739665" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739665">(Nov 14 2019 at 15:15)</a>:</h4>
<p>figured its easiest to just post 'em all</p>



<a name="180739703"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739703" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739703">(Nov 14 2019 at 15:16)</a>:</h4>
<p>beta-nom 2/9: "Do not ICE on trait aliases with missing obligations" <a href="https://github.com/rust-lang/rust/issues/66392" target="_blank" title="https://github.com/rust-lang/rust/issues/66392">#66392</a></p>



<a name="180739753"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739753" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739753">(Nov 14 2019 at 15:16)</a>:</h4>
<p>same deal for this one; it was posted last night</p>



<a name="180739773"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739773" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739773">(Nov 14 2019 at 15:16)</a>:</h4>
<p>beta-nom 3/9: "Do not ICE in <code>if</code> without <code>else</code> in <code>async fn</code>" <a href="https://github.com/rust-lang/rust/issues/66391" target="_blank" title="https://github.com/rust-lang/rust/issues/66391">#66391</a></p>



<a name="180739788"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739788" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739788">(Nov 14 2019 at 15:16)</a>:</h4>
<p>Re: <a href="https://github.com/rust-lang/rust/issues/66392" target="_blank" title="https://github.com/rust-lang/rust/issues/66392">#66392</a>, I don't think we need to backport for unstable features</p>



<a name="180739828"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739828" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739828">(Nov 14 2019 at 15:17)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> it ICEs without the gates</p>



<a name="180739861"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739861" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739861">(Nov 14 2019 at 15:17)</a>:</h4>
<p>(then perhaps we need another test?)</p>



<a name="180739879"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739879" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739879">(Nov 14 2019 at 15:17)</a>:</h4>
<p>good point (cc <span class="user-mention" data-user-id="119031">@Esteban Küber</span> )</p>



<a name="180739890"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739890" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739890">(Nov 14 2019 at 15:17)</a>:</h4>
<p>yeah lets note that on the PR itself</p>



<a name="180739894"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739894" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739894">(Nov 14 2019 at 15:17)</a>:</h4>
<p>I see, it ICEs if you use the syntax even w/ feature gate disabled, you're saying?</p>



<a name="180739907"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739907" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739907">(Nov 14 2019 at 15:17)</a>:</h4>
<p>still, i'm unconvinced we need to backport.</p>



<a name="180739960"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739960" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739960">(Nov 14 2019 at 15:18)</a>:</h4>
<p>but I'll move to shrug :)</p>



<a name="180739990"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180739990" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180739990">(Nov 14 2019 at 15:18)</a>:</h4>
<p>I'll join in with that sentiment ^^</p>



<a name="180740008"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740008" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740008">(Nov 14 2019 at 15:18)</a>:</h4>
<p>I'll finish posting all teh ones that were posted last night</p>



<a name="180740019"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740019" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740019">(Nov 14 2019 at 15:18)</a>:</h4>
<p>beta-nom 4/9: " Fix ICE when trying to suggest <code>Type&lt;&gt;</code> instead of <code>Type()</code>" <a href="https://github.com/rust-lang/rust/issues/66390" target="_blank" title="https://github.com/rust-lang/rust/issues/66390">#66390</a></p>



<a name="180740081"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740081" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740081">(Nov 14 2019 at 15:19)</a>:</h4>
<p>(this is another one from last night. i.e. it doesn't have to be decided this week)</p>



<a name="180740113"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740113" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740113">(Nov 14 2019 at 15:19)</a>:</h4>
<p>beta-nom 5/9: "Do not ICE on recovery from unmet associated type bound obligation" <a href="https://github.com/rust-lang/rust/issues/66388" target="_blank" title="https://github.com/rust-lang/rust/issues/66388">#66388</a></p>



<a name="180740129"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740129" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740129">(Nov 14 2019 at 15:19)</a>:</h4>
<p>(this is another one from last night. i.e. it doesn't have to be decided this week)</p>



<a name="180740228"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740228" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740228">(Nov 14 2019 at 15:20)</a>:</h4>
<p>beta-nom 6/9: "find_deprecation: deprecation attr may be ill-formed meta." <a href="https://github.com/rust-lang/rust/issues/66381" target="_blank" title="https://github.com/rust-lang/rust/issues/66381">#66381</a></p>



<a name="180740266"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740266" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740266">(Nov 14 2019 at 15:21)</a>:</h4>
<p>hmm i miscounted. :)</p>



<a name="180740399"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740399" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740399">(Nov 14 2019 at 15:22)</a>:</h4>
<p>sed -e s/7/9/g</p>



<a name="180740442"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740442" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740442">(Nov 14 2019 at 15:22)</a>:</h4>
<p>okay so let me take a pause here before we go to the final three</p>



<a name="180740458"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740458" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740458">(Nov 14 2019 at 15:22)</a>:</h4>
<p>The question of policy is perhaps interesting</p>



<a name="180740501"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740501" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740501">(Nov 14 2019 at 15:23)</a>:</h4>
<p>in terms of whether to backport <a href="https://github.com/rust-lang/rust/issues/66392" target="_blank" title="https://github.com/rust-lang/rust/issues/66392">#66392</a></p>



<a name="180740545"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740545" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740545">(Nov 14 2019 at 15:23)</a>:</h4>
<p>I suppose my vote would be influenced by what the ICE looks like, i.e. what kind of error one sees without the feature gate in place</p>



<a name="180740622"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740622" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740622">(Nov 14 2019 at 15:24)</a>:</h4>
<p>bug report says "error: internal compiler error: src/librustc_typeck/astconv.rs:1216: trait_ref_to_existential called on &lt;OnSet as Callback0&gt; with non-dummy Self"</p>



<a name="180740626"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740626" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740626">(Nov 14 2019 at 15:24)</a>:</h4>
<p>Makes sense.</p>



<a name="180740633"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740633" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740633">(Nov 14 2019 at 15:24)</a>:</h4>
<p>probably the same as with the gate active</p>



<a name="180740640"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740640" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740640">(Nov 14 2019 at 15:24)</a>:</h4>
<p>I think given that it is such a tiny PR, we might as well backport</p>



<a name="180740644"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740644" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740644">(Nov 14 2019 at 15:24)</a>:</h4>
<p>It's the same error in both cases</p>



<a name="180740654"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740654" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740654">(Nov 14 2019 at 15:24)</a>:</h4>
<p>is that message enough for someone to work out a workaround?</p>



<a name="180740660"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740660" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740660">(Nov 14 2019 at 15:24)</a>:</h4>
<p>If it were more complex, I would feel less motivated</p>



<a name="180740674"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740674" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740674">(Nov 14 2019 at 15:24)</a>:</h4>
<p>I only enabled the hate in the test to reduce the output</p>



<a name="180740723"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740723" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740723">(Nov 14 2019 at 15:25)</a>:</h4>
<blockquote>
<p>I only enabled the hate in the test to reduce the output</p>
</blockquote>
<p>the point is that it wasn't clear, at least from the  diff, that this was a non nightly-only bug</p>



<a name="180740737"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740737" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740737">(Nov 14 2019 at 15:25)</a>:</h4>
<p>That's fair</p>



<a name="180740767"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740767" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740767">(Nov 14 2019 at 15:25)</a>:</h4>
<p><span class="user-mention" data-user-id="119031">@Esteban Küber</span> the only point I had is that I think if we think the PR is papering over something, then we should file a FIXME issue for the fix</p>



<a name="180740782"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740782" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740782">(Nov 14 2019 at 15:25)</a>:</h4>
<p>and label that with <code>F-trait_alias</code></p>



<a name="180740785"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740785" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740785">(Nov 14 2019 at 15:25)</a>:</h4>
<p>If it was nightly only I wouldn't have nominated it though <span aria-label="sweat smile" class="emoji emoji-1f605" role="img" title="sweat smile">:sweat_smile:</span></p>



<a name="180740874"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740874" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740874">(Nov 14 2019 at 15:26)</a>:</h4>
<blockquote>
<p>If it were more complex, I would feel less motivated</p>
</blockquote>
<p>specifically, this is "just" replacing a <code>bug!</code> with a <code>delay_span_bug!</code>, right?</p>



<a name="180740898"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740898" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740898">(Nov 14 2019 at 15:26)</a>:</h4>
<p>sounds like the kind of thing we can generally feel pretty safe backporting, yeah</p>



<a name="180740933"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740933" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740933">(Nov 14 2019 at 15:27)</a>:</h4>
<p>so it sounds like we can approve all six of the aforementioned PR's for beta backport then?</p>



<a name="180740957"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740957" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740957">(Nov 14 2019 at 15:27)</a>:</h4>
<p>I'll work on that assumption until someone says otherwise</p>



<a name="180740961"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740961" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740961">(Nov 14 2019 at 15:27)</a>:</h4>
<p>lets move on to the final three</p>



<a name="180740979"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180740979" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180740979">(Nov 14 2019 at 15:27)</a>:</h4>
<p>beta-nom 7/9: "parser: don't use <code>unreachable!()</code> in <code>fn unexpected</code>." <a href="https://github.com/rust-lang/rust/issues/66361" target="_blank" title="https://github.com/rust-lang/rust/issues/66361">#66361</a></p>



<a name="180741138"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741138" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741138">(Nov 14 2019 at 15:29)</a>:</h4>
<p>seems fine, beta-accepted</p>



<a name="180741205"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741205" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741205">(Nov 14 2019 at 15:30)</a>:</h4>
<p>beta-nom 8/9: "async fn presence affects an unrelated error message" <a href="https://github.com/rust-lang/rust/issues/66312" target="_blank" title="https://github.com/rust-lang/rust/issues/66312">#66312</a></p>



<a name="180741218"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741218" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741218">(Nov 14 2019 at 15:30)</a>:</h4>
<p>oh whoopse</p>



<a name="180741226"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741226" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741226">(Nov 14 2019 at 15:30)</a>:</h4>
<p>I tagged an issue instead of a PR</p>



<a name="180741234"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741234" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741234">(Nov 14 2019 at 15:30)</a>:</h4>
<p>or rather, <span class="user-mention" data-user-id="121055">@Pietro Albini</span> did</p>



<a name="180741250"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741250" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741250">(Nov 14 2019 at 15:30)</a>:</h4>
<p>so ... never mind? I mean, we typically don't make decisions based on issues alone</p>



<a name="180741284"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741284" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741284">(Nov 14 2019 at 15:31)</a>:</h4>
<p>(I could <em>imagine</em> eagerly determining that a beta-backport <em>wont</em> be necessary)</p>



<a name="180741285"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741285" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741285">(Nov 14 2019 at 15:31)</a>:</h4>
<p>yeah, that was both a "oops I didn't see this was an issue" on my end and a reminder to nominate the resulting PR</p>



<a name="180741289"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741289" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741289">(Nov 14 2019 at 15:31)</a>:</h4>
<p>yea and I think the problem is much less bad than I anticipated after Jonas's comment</p>



<a name="180741296"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741296" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741296">(Nov 14 2019 at 15:31)</a>:</h4>
<p>(but it just hasn't been our process to date)</p>



<a name="180741304"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741304" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741304">(Nov 14 2019 at 15:31)</a>:</h4>
<p>okay</p>



<a name="180741316"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741316" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741316">(Nov 14 2019 at 15:31)</a>:</h4>
<p>so we'll remove the labels</p>



<a name="180741337"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741337" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741337">(Nov 14 2019 at 15:32)</a>:</h4>
<p>beta-nom 9/9: "Undo an assert causing an ICE until we fix the underlying problem" <a href="https://github.com/rust-lang/rust/issues/66250" target="_blank" title="https://github.com/rust-lang/rust/issues/66250">#66250</a></p>



<a name="180741378"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741378" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741378">(Nov 14 2019 at 15:32)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> my original fear was that the priorities in method selection was wrong on stable so that we'd have to point release</p>



<a name="180741381"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741381" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741381">(Nov 14 2019 at 15:32)</a>:</h4>
<p>but that was wrong</p>



<a name="180741409"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741409" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741409">(Nov 14 2019 at 15:32)</a>:</h4>
<p>yep, I understand. It was a scary looking bug. still sort of is, to me.</p>



<a name="180741492"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741492" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741492">(Nov 14 2019 at 15:33)</a>:</h4>
<blockquote>
<p>beta-nom 9/9: "Undo an assert causing an ICE until we fix the underlying problem" <a href="https://github.com/rust-lang/rust/issues/66250" target="_blank" title="https://github.com/rust-lang/rust/issues/66250">#66250</a></p>
</blockquote>
<p>by the way: Not your best title for a PR, <span class="user-mention" data-user-id="124288">@oli</span> . <span aria-label="wink" class="emoji emoji-1f609" role="img" title="wink">:wink:</span></p>



<a name="180741596"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741596" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741596">(Nov 14 2019 at 15:34)</a>:</h4>
<p>the bug being resolved here is "ICE: "Tried to access field 0 of union with 0 fields"" <a href="https://github.com/rust-lang/rust/issues/65462" target="_blank" title="https://github.com/rust-lang/rust/issues/65462">#65462</a></p>



<a name="180741631"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741631" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741631">(Nov 14 2019 at 15:34)</a>:</h4>
<p>of note, <em>this</em> is a case where the error message, while pointing out the cause, completely lacks a span</p>



<a name="180741666"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741666" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741666">(Nov 14 2019 at 15:35)</a>:</h4>
<p>some of the other ICE's we've discussed earlier in the meeting always seemed to have error messages that had useful content <del>and spans</del> no not always spans</p>



<a name="180741691"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741691" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741691">(Nov 14 2019 at 15:35)</a>:</h4>
<p>so anyway that's what tips me over the edge for being pro-backport for PR <a href="https://github.com/rust-lang/rust/issues/66250" target="_blank" title="https://github.com/rust-lang/rust/issues/66250">#66250</a></p>



<a name="180741761"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741761" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741761">(Nov 14 2019 at 15:36)</a>:</h4>
<p>okay so lets accept it for beta backport. That's all the beta-nominations</p>



<a name="180741786"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741786" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741786">(Nov 14 2019 at 15:36)</a>:</h4>
<p>time check: 24 minutes left</p>



<a name="180741813"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741813" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741813">(Nov 14 2019 at 15:37)</a>:</h4>
<p>we have  a bunch of <a href="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=+label%3Astable-nominated+label%3AT-compiler" target="_blank" title="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=+label%3Astable-nominated+label%3AT-compiler">stable nominations</a></p>



<a name="180741814"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741814" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741814">(Nov 14 2019 at 15:37)</a>:</h4>
<blockquote>
<p>so anyway that's what tips me over the edge for being pro-backport for PR <a href="https://github.com/rust-lang/rust/issues/66250" target="_blank" title="https://github.com/rust-lang/rust/issues/66250">#66250</a></p>
</blockquote>
<p>(re this, maybe we want a FIXME comment + another bug, to track the underlying problem? cc <span class="user-mention" data-user-id="124288">@oli</span>)</p>



<a name="180741924"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741924" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741924">(Nov 14 2019 at 15:38)</a>:</h4>
<p>my suggestion: lets <em>not</em> do the stable nominations of PR's that were posted in the last 24 hours</p>



<a name="180741938"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741938" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741938">(Nov 14 2019 at 15:38)</a>:</h4>
<p>those <em>should</em> wait until next week</p>



<a name="180741997"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180741997" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180741997">(Nov 14 2019 at 15:38)</a>:</h4>
<p>so that leaves us with two stable nominations to look at toda</p>



<a name="180742024"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180742024" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180742024">(Nov 14 2019 at 15:39)</a>:</h4>
<p>stable-nom 1/2: "async fn presence affects an unrelated error message" <a href="https://github.com/rust-lang/rust/issues/66312" target="_blank" title="https://github.com/rust-lang/rust/issues/66312">#66312</a></p>



<a name="180742030"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180742030" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180742030">(Nov 14 2019 at 15:39)</a>:</h4>
<p>darn it</p>



<a name="180742032"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180742032" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180742032">(Nov 14 2019 at 15:39)</a>:</h4>
<p>I can't believe i fell for it again</p>



<a name="180742089"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180742089" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180742089">(Nov 14 2019 at 15:40)</a>:</h4>
<p><em>shouldnt</em> this be tagged a regression though? Why isn't it?</p>



<a name="180742199"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180742199" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180742199">(Nov 14 2019 at 15:40)</a>:</h4>
<p>okay well</p>



<a name="180742202"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180742202" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180742202">(Nov 14 2019 at 15:40)</a>:</h4>
<p>probably was always "broken"?</p>



<a name="180742206"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180742206" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180742206">(Nov 14 2019 at 15:40)</a>:</h4>
<p>stable nom 2/2: "Do not ICE with a precision flag in formatting str and no format arguments" <a href="https://github.com/rust-lang/rust/issues/66093" target="_blank" title="https://github.com/rust-lang/rust/issues/66093">#66093</a></p>



<a name="180742215"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180742215" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180742215">(Nov 14 2019 at 15:40)</a>:</h4>
<p>so it's not "good" -&gt; "bad"</p>



<a name="180742218"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180742218" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180742218">(Nov 14 2019 at 15:40)</a>:</h4>
<blockquote>
<p>probably was always "broken"?</p>
</blockquote>
<p>ah that could be</p>



<a name="180742259"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180742259" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180742259">(Nov 14 2019 at 15:41)</a>:</h4>
<p>whoops again</p>



<a name="180742267"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180742267" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180742267">(Nov 14 2019 at 15:41)</a>:</h4>
<p><a href="https://github.com/rust-lang/rust/issues/66093" target="_blank" title="https://github.com/rust-lang/rust/issues/66093">#66093</a> was already stable-accepted</p>



<a name="180742272"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180742272" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180742272">(Nov 14 2019 at 15:41)</a>:</h4>
<p>boy I just am off my game today</p>



<a name="180742352"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180742352" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180742352">(Nov 14 2019 at 15:42)</a>:</h4>
<p>alright, well, we have five <a href="https://github.com/rust-lang/rust/issues?q=is%3Aopen+label%3AI-nominated+label%3AT-compiler" target="_blank" title="https://github.com/rust-lang/rust/issues?q=is%3Aopen+label%3AI-nominated+label%3AT-compiler">nominations</a></p>



<a name="180742380"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180742380" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180742380">(Nov 14 2019 at 15:42)</a>:</h4>
<p>the first of which I'm ignoring</p>



<a name="180742402"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180742402" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180742402">(Nov 14 2019 at 15:42)</a>:</h4>
<p>ctypes and rustfmt look good to discuss</p>



<a name="180742406"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180742406" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180742406">(Nov 14 2019 at 15:42)</a>:</h4>
<p>(<a href="https://github.com/rust-lang/rust/issues/66406" target="_blank" title="https://github.com/rust-lang/rust/issues/66406">#66406</a> was nominated after I did pretriage and so I missed it earlier; it just needs prioiritzation)</p>



<a name="180742421"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180742421" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180742421">(Nov 14 2019 at 15:43)</a>:</h4>
<p>so, first up: "improper_ctypes fires for &amp;mut T, &amp;T, *const T and *mut T (when T: Sized)" <a href="https://github.com/rust-lang/rust/issues/66220" target="_blank" title="https://github.com/rust-lang/rust/issues/66220">#66220</a></p>



<a name="180742448"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180742448" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180742448">(Nov 14 2019 at 15:43)</a>:</h4>
<p>basically, PR <a href="https://github.com/rust-lang/rust/issues/65134" target="_blank" title="https://github.com/rust-lang/rust/issues/65134">#65134</a> changed the semantics of improper_ctypes lint</p>



<a name="180742461"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180742461" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180742461">(Nov 14 2019 at 15:43)</a>:</h4>
<p>and it gets a lot more false matches now</p>



<a name="180742484"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180742484" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180742484">(Nov 14 2019 at 15:43)</a>:</h4>
<p>there were a bunch of bugs filed</p>



<a name="180742537"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180742537" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180742537">(Nov 14 2019 at 15:44)</a>:</h4>
<p>/me (afk for a few minutes btw)</p>



<a name="180743910"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180743910" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180743910">(Nov 14 2019 at 15:58)</a>:</h4>
<p>/me has a check-in prepared and ready to go :)</p>



<a name="180743964"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180743964" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180743964">(Nov 14 2019 at 15:58)</a>:</h4>
<p>it'd be good to visit the rustfmt issue</p>



<a name="180743981"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180743981" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180743981">(Nov 14 2019 at 15:58)</a>:</h4>
<p>or at least get some eyes on it, as I'd like to move ahead with it</p>



<a name="180744005"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744005" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744005">(Nov 14 2019 at 15:58)</a>:</h4>
<p>okay I moved the discussion of revert polciy over here: <a href="#narrow/stream/131828-t-compiler/topic/to.20revert.20or.20not.20to.20revert.20that.20is.20the.20question/near/180742558" title="#narrow/stream/131828-t-compiler/topic/to.20revert.20or.20not.20to.20revert.20that.20is.20the.20question/near/180742558">https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/to.20revert.20or.20not.20to.20revert.20that.20is.20the.20question/near/180742558</a></p>



<a name="180744009"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744009" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744009">(Nov 14 2019 at 15:58)</a>:</h4>
<p>the one note I'd make re. rustfmt is that this will raise the bar on using new unstable features in rustc</p>



<a name="180744048"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744048" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744048">(Nov 14 2019 at 15:59)</a>:</h4>
<p>lets visit the rustfmt issue</p>



<a name="180744060"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744060" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744060">(Nov 14 2019 at 15:59)</a>:</h4>
<p>if they are syntactic, they now need to be supported in rustfmt as well</p>



<a name="180744062"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744062" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744062">(Nov 14 2019 at 15:59)</a>:</h4>
<p>nom:  Enable incremental rustfmt adoption <a href="https://github.com/rust-lang/rust/issues/65939" target="_blank" title="https://github.com/rust-lang/rust/issues/65939">#65939</a></p>



<a name="180744082"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744082" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744082">(Nov 14 2019 at 15:59)</a>:</h4>
<p>to be honest</p>



<a name="180744087"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744087" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744087">(Nov 14 2019 at 15:59)</a>:</h4>
<p>I'm not ready to make a decision here</p>



<a name="180744091"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744091" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744091">(Nov 14 2019 at 15:59)</a>:</h4>
<p>because I need to read over it</p>



<a name="180744094"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744094" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744094">(Nov 14 2019 at 15:59)</a>:</h4>
<p>(but that's not a high bar)</p>



<a name="180744107"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744107" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744107">(Nov 14 2019 at 15:59)</a>:</h4>
<p>but I think its good to get everyone's eyeballs on it now</p>



<a name="180744208"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744208" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744208">(Nov 14 2019 at 16:00)</a>:</h4>
<p>wasn't a decision made in <a href="https://github.com/rust-lang/compiler-team/issues/80" target="_blank" title="https://github.com/rust-lang/compiler-team/issues/80">https://github.com/rust-lang/compiler-team/issues/80</a> ?</p>



<a name="180744210"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744210" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744210">(Nov 14 2019 at 16:00)</a>:</h4>
<p>I feel like we already decided to go fwd with rustfmt a long time back -- what's being proposed here is basically an incremental impl strategy</p>



<a name="180744214"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744214" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744214">(Nov 14 2019 at 16:00)</a>:</h4>
<p>Yes, that</p>



<a name="180744220"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744220" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744220">(Nov 14 2019 at 16:00)</a>:</h4>
<p>I'm not sure how much "decision making" is really needed</p>



<a name="180744226"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744226" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744226">(Nov 14 2019 at 16:00)</a>:</h4>
<p>okay then</p>



<a name="180744252"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744252" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744252">(Nov 14 2019 at 16:00)</a>:</h4>
<p>we could certainly move to an async poll / rfcbot merge</p>



<a name="180744261"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744261" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744261">(Nov 14 2019 at 16:00)</a>:</h4>
<p>I think we could mvoe to r+</p>



<a name="180744268"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744268" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744268">(Nov 14 2019 at 16:00)</a>:</h4>
<p>we did that rfcbot merge already</p>



<a name="180744269"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744269" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744269">(Nov 14 2019 at 16:01)</a>:</h4>
<p>don't use rfcbot poll :P</p>



<a name="180744279"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744279" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744279">(Nov 14 2019 at 16:01)</a>:</h4>
<p>or just assume that the decision from <a href="https://github.com/rust-lang/compiler-team/issues/80" target="_blank" title="https://github.com/rust-lang/compiler-team/issues/80">compiler-team#80</a> carries over</p>



<a name="180744284"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744284" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744284">(Nov 14 2019 at 16:01)</a>:</h4>
<p>use merge instead ^^</p>



<a name="180744314"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744314" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744314">(Nov 14 2019 at 16:01)</a>:</h4>
<p>basically we <a href="https://github.com/rust-lang/compiler-team/issues/80#issuecomment-491324079" target="_blank" title="https://github.com/rust-lang/compiler-team/issues/80#issuecomment-491324079">made a decision here</a> not to go fwd with a meeting</p>



<a name="180744321"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744321" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744321">(Nov 14 2019 at 16:01)</a>:</h4>
<p>okay sounds fine to me</p>



<a name="180744329"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744329" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744329">(Nov 14 2019 at 16:01)</a>:</h4>
<p>if anyone has comments, post 'em on the PR</p>



<a name="180744340"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744340" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744340">(Nov 14 2019 at 16:01)</a>:</h4>
<p>(and I'll make sure to take a look at it too)</p>



<a name="180744398"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744398" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744398">(Nov 14 2019 at 16:02)</a>:</h4>
<p>so okay, maybe in the negative 2 minutes we have left</p>



<a name="180744405"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744405" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744405">(Nov 14 2019 at 16:02)</a>:</h4>
<p>we can get WG checkins</p>



<a name="180744410"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744410" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744410">(Nov 14 2019 at 16:02)</a>:</h4>
<p><span class="user-mention" data-user-id="125250">@Wesley Wiser</span> you still tee'd up?</p>



<a name="180744443"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744443" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744443">(Nov 14 2019 at 16:02)</a>:</h4>
<p>So wg-self-profile is been fairly active since the last time we checked in! I'll try to list just the major highlights:</p>
<ul>
<li>
<p>We've nearly completed our long standing <a href="https://github.com/rust-lang/rust/issues/58967" target="_blank" title="https://github.com/rust-lang/rust/issues/58967">MVP goal</a>!</p>
<ul>
<li>@simulacrum has done some nice work to polish the integration with perf.rlo</li>
<li>We've added tracking for all the events we're aware of that should be traced with the exception of trait selection.<ul>
<li>We could really use some input as to what would be helpful to track! (perhaps @nikomatsakis has a rough idea?)</li>
</ul>
</li>
</ul>
</li>
<li>
<p>@mw has been working on some changes to the binary format we record events in.</p>
<ul>
<li>The new format is more compact so results in a smaller trace file and hopefully less runtime overhead.</li>
<li>The new format is also more amenable to recording query keys, which is a highly requested feature.</li>
</ul>
</li>
<li>
<p>@wesleywiser has added some crate level docs to make getting into the code easier.</p>
</li>
<li>
<p>@wesleywiser also added code to record process id, start time, and arguments to the trace file which we've started using.</p>
</li>
<li>
<p>@andjo403 has been a roll with <em>a lot</em> of great PRs!</p>
<ul>
<li>
<p>We now have a dedicated tool for generating flamegraphs directly so you don't have to use the Perl scripts anymore.</p>
</li>
<li>
<p>Some internal refactoring that makes adding new tools easier.</p>
</li>
<li>Lots of work on the Chromium dev tools exporter:<ul>
<li>New option to collapse disjoint threads so it's a little more manageable</li>
<li>New option to filter out small events under a configurable threshold (necessary for very large compilations)</li>
<li><span aria-label="tada" class="emoji emoji-1f389" role="img" title="tada">:tada:</span> <span aria-label="tada" class="emoji emoji-1f389" role="img" title="tada">:tada:</span> You can now have multiple crate compilations in the same export file. This is similar to what <code>cargo build -Z timings</code> can do but much more detailed.</li>
</ul>
</li>
</ul>
</li>
</ul>
<p>Looking ahead, there are a few more changes we want to land related to the binary format before we will cut a new release and upgrade <code>rustc</code> to the latest version.</p>
<p>We're beginning to plan out the next thing to work on but no concrete plans yet.</p>
<p>(I suspect we'll focus on delivering support for recording query keys since that is so highly anticipated)</p>



<a name="180744468"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744468" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744468">(Nov 14 2019 at 16:03)</a>:</h4>
<p>what happened to my formatting?</p>



<a name="180744483"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744483" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744483">(Nov 14 2019 at 16:03)</a>:</h4>
<p>heh</p>



<a name="180744508"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744508" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744508">(Nov 14 2019 at 16:03)</a>:</h4>
<p>at least your code and emojis are preserved.</p>



<a name="180744539"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744539" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744539">(Nov 14 2019 at 16:03)</a>:</h4>
<p>so the the things where you want feedback are:</p>
<blockquote>
<p>We could really use some input as to what would be helpful to track! (perhaps @nikomatsakis has a rough idea?)</p>
</blockquote>



<a name="180744617"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744617" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744617">(Nov 14 2019 at 16:04)</a>:</h4>
<blockquote>
<p>what happened to my formatting?</p>
</blockquote>
<p>Use <code>*</code> instead of <code>-</code></p>



<a name="180744621"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744621" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744621">(Nov 14 2019 at 16:04)</a>:</h4>
<p>any other feedback you want from people?</p>



<a name="180744643"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744643" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744643">(Nov 14 2019 at 16:04)</a>:</h4>
<p><span class="user-mention" data-user-id="125250">@Wesley Wiser</span> I have a question</p>



<a name="180744646"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744646" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744646">(Nov 14 2019 at 16:04)</a>:</h4>
<p>That's a very detailed update, <span class="user-mention" data-user-id="125250">@Wesley Wiser</span>! Thank you!</p>



<a name="180744657"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744657" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744657">(Nov 14 2019 at 16:04)</a>:</h4>
<p>to what extentis this workflow documented? can we add it to the unstable book?</p>



<a name="180744665"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744665" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744665">(Nov 14 2019 at 16:05)</a>:</h4>
<p>Also, this sounds <em>amazing</em></p>



<a name="180744688"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744688" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744688">(Nov 14 2019 at 16:05)</a>:</h4>
<p>I can definitely break out some time to try to help with profiling trait selection</p>



<a name="180744765"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744765" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744765">(Nov 14 2019 at 16:05)</a>:</h4>
<p>Which workflow do you mean specifically? There's already a small amount of documentation in the rustc guide.</p>



<a name="180744818"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744818" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744818">(Nov 14 2019 at 16:06)</a>:</h4>
<p>Btw... is there a guide to how one gets those nice graphical timings for looking at pipelining?</p>



<a name="180744836"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744836" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744836">(Nov 14 2019 at 16:06)</a>:</h4>
<p>Oh right, I also meant to post some images</p>



<a name="180744899"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744899" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744899">(Nov 14 2019 at 16:07)</a>:</h4>
<blockquote>
<p>Which workflow do you mean specifically? There's already a small amount of documentation in the rustc guide.</p>
</blockquote>
<p>I think it should be in the unstable book, and pointed to, but that's a good question! Mostly I mean this:</p>



<a name="180744905"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744905" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744905">(Nov 14 2019 at 16:07)</a>:</h4>
<p>Here's a demo of the multi-crate support in the Chrome Dev Tools:</p>
<p>collapsed:</p>
<div class="message_inline_image"><a href="https://user-images.githubusercontent.com/831192/68633387-b9c23a80-04bf-11ea-96aa-ac3e4c369159.png" target="_blank" title="https://user-images.githubusercontent.com/831192/68633387-b9c23a80-04bf-11ea-96aa-ac3e4c369159.png"><img src="https://user-images.githubusercontent.com/831192/68633387-b9c23a80-04bf-11ea-96aa-ac3e4c369159.png"></a></div><p>expanded:</p>
<div class="message_inline_image"><a href="https://user-images.githubusercontent.com/831192/68633388-b9c23a80-04bf-11ea-97f9-1ffa15f45d72.png" target="_blank" title="https://user-images.githubusercontent.com/831192/68633388-b9c23a80-04bf-11ea-97f9-1ffa15f45d72.png"><img src="https://user-images.githubusercontent.com/831192/68633388-b9c23a80-04bf-11ea-97f9-1ffa15f45d72.png"></a></div>



<a name="180744915"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744915" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744915">(Nov 14 2019 at 16:07)</a>:</h4>
<p>I periodically get asked how to tell where compilation time is going</p>



<a name="180744917"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744917" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744917">(Nov 14 2019 at 16:07)</a>:</h4>
<blockquote>
<p>Which workflow do you mean specifically? There's already a small amount of documentation in the rustc guide.</p>
</blockquote>
<p>is this referring to this bullet: <a href="https://rust-lang.github.io/rustc-guide/profiling.html?highlight=self-profile#profiling-the-compiler" target="_blank" title="https://rust-lang.github.io/rustc-guide/profiling.html?highlight=self-profile#profiling-the-compiler">https://rust-lang.github.io/rustc-guide/profiling.html?highlight=self-profile#profiling-the-compiler</a> ?</p>



<a name="180744923"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744923" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744923">(Nov 14 2019 at 16:07)</a>:</h4>
<p>we should probably create a tracking issue for documenting the most asked for workflows</p>



<a name="180744941"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744941" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744941">(Nov 14 2019 at 16:07)</a>:</h4>
<p>AFAIK right now I have to go remember the github URL and point people to .md files that are buried in there</p>



<a name="180744948"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744948" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744948">(Nov 14 2019 at 16:07)</a>:</h4>
<p>(where the aforementioned bullet just links to <code>measureme</code>/<code>summarize</code> 's README.md ?)</p>



<a name="180744960"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180744960" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180744960">(Nov 14 2019 at 16:07)</a>:</h4>
<p>just having a page in the rustc book (or unstable rustc book) that links to those readmes would be great</p>



<a name="180745025"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180745025" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180745025">(Nov 14 2019 at 16:08)</a>:</h4>
<p>prob also good to link from rustc-guide</p>



<a name="180745046"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180745046" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180745046">(Nov 14 2019 at 16:08)</a>:</h4>
<p>Okay so it sounds like we want to get some links set up</p>



<a name="180745056"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180745056" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180745056">(Nov 14 2019 at 16:08)</a>:</h4>
<p>Example: <a href="https://doc.rust-lang.org/unstable-book/compiler-flags/profile.html" target="_blank" title="https://doc.rust-lang.org/unstable-book/compiler-flags/profile.html">https://doc.rust-lang.org/unstable-book/compiler-flags/profile.html</a></p>



<a name="180745069"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180745069" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180745069">(Nov 14 2019 at 16:08)</a>:</h4>
<p>we're pretty overtime, but I do want to make sure <span class="user-mention" data-user-id="133169">@matklad</span> has a chance to post their update from WG-rls-2.0</p>



<a name="180745076"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180745076" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180745076">(Nov 14 2019 at 16:08)</a>:</h4>
<p>(Personally, I think we should put links everywhere that funnel to some central source)</p>



<a name="180745100"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180745100" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180745100">(Nov 14 2019 at 16:08)</a>:</h4>
<p>Sorry that I'm like a broken record. I just want to help people to find this great work you're doing.</p>



<a name="180745104"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180745104" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180745104">(Nov 14 2019 at 16:09)</a>:</h4>
<p>(because I don't have a good methodolgy in place for changing the WG checkin schedul)</p>



<a name="180745116"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180745116" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> matklad <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180745116">(Nov 14 2019 at 16:09)</a>:</h4>
<p>Here, here's a much shorter and worse formatted list :)</p>
<ul>
<li>splitting core of rust-analyzer into crates</li>
<li>find usages  is implemented</li>
<li>macro expansion now can map source ranges to expanded ranges, so goto def correctly goes "inside" macro call</li>
<li>more chalk an type inference work, specifically, support for closures</li>
<li>there's ongoing discussion about the general planning about rustc, rls, and rust-analyzer</li>
</ul>



<a name="180745128"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180745128" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180745128">(Nov 14 2019 at 16:09)</a>:</h4>
<p>oh hey; we're below 5000 issues again <span aria-label="tada" class="emoji emoji-1f389" role="img" title="tada">:tada:</span></p>



<a name="180745170"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180745170" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> matklad <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180745170">(Nov 14 2019 at 16:09)</a>:</h4>
<p>And I really got to run now, but I'll catch up later!</p>



<a name="180745190"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180745190" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180745190">(Nov 14 2019 at 16:09)</a>:</h4>
<p>thanks <span class="user-mention" data-user-id="133169">@matklad</span> !</p>



<a name="180745241"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180745241" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180745241">(Nov 14 2019 at 16:10)</a>:</h4>
<p>and thanks <span class="user-mention" data-user-id="125250">@Wesley Wiser</span> for your awesome update</p>



<a name="180745261"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180745261" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180745261">(Nov 14 2019 at 16:10)</a>:</h4>
<p>damn; <span class="user-mention" data-user-id="133169">@matklad</span>  wanted to ask if y'all had plans for shipping rust-analyzer without having to build it myself</p>



<a name="180745344"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180745344" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180745344">(Nov 14 2019 at 16:11)</a>:</h4>
<p>So yeah, I have to run too. But I wanted to thank everyone in <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span> for joining! This was a great meeting</p>



<a name="180745542"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180745542" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180745542">(Nov 14 2019 at 16:12)</a>:</h4>
<blockquote>
<p>I can definitely break out some time to try to help with profiling trait selection</p>
</blockquote>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> That would be greatly appreciated!!</p>



<a name="180746022"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180746022" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180746022">(Nov 14 2019 at 16:17)</a>:</h4>
<p><span class="user-mention" data-user-id="119031">@Esteban Küber</span> should I r- <a href="https://github.com/rust-lang/rust/pull/66388" target="_blank" title="https://github.com/rust-lang/rust/pull/66388">https://github.com/rust-lang/rust/pull/66388</a> for now and let you implement <span class="user-mention" data-user-id="116009">@nikomatsakis</span>'s suggestion?</p>



<a name="180746129"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180746129" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180746129">(Nov 14 2019 at 16:18)</a>:</h4>
<p>Sure</p>



<a name="180752880"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-14%20%2354818/near/180752880" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> matklad <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-14.20.2354818.html#180752880">(Nov 14 2019 at 17:27)</a>:</h4>
<p><span class="user-mention" data-user-id="126931">@centril</span> opened <a href="#narrow/stream/185405-t-compiler.2Fwg-rls-2.2E0/topic/publishing.20rust-analyzer" title="#narrow/stream/185405-t-compiler.2Fwg-rls-2.2E0/topic/publishing.20rust-analyzer">https://rust-lang.zulipchat.com/#narrow/stream/185405-t-compiler.2Fwg-rls-2.2E0/topic/publishing.20rust-analyzer</a> to disucss publishing</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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